arm64/sysreg: Convert ID_AA64PFR0_EL1 to automatic generation

Automatically generate the constants for ID_AA64PFR0_EL1 as per DDI0487I.a,
no functional changes. The generic defines for the ELx fields are left in
place as they remain useful.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Kristina Martsenko <kristina.martsenko@arm.com>
Link: https://lore.kernel.org/r/20220905225425.1871461-25-broonie@kernel.org


Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>